我很好奇我是否可以使用正则表达式在XML文件中搜索某个标记。如果我使用fopen（'foo.xml'）;我可以搜索文件；但它只能让我搜索标签之间的内容，而不能搜索它们自身的标签。我的目标是希望创建一个函数，使我可以删除两个标签之间的所有内容，例如xml文件中用户之间的所有内容。他使用的语言是PHP。
谢谢约翰。
答案 0 :(得分：0)
您应该使用SimpleXML之类的东西来处理/编辑XML文件。
如果您真的坚持通过将SML文件视为string来执行此操作，则可以执行类似的操作（或使用正则表达式）。但是您应该使用XML库。
// get your file as a string
$yourXML = file_get_contents($file) ;
$posStart = stripos($yourXML,'<users>') + strlen('<users>') ;
$posEnd = stripos($yourXML,'</users>') ;
$newXML = substr($yourXML,0,$posStart) . substr($yourXML,$posEnd) ;
// <users> is now empty
echo $newXML ;
答案 1 :(得分：0)
DomDocument＆XPath将使事情变得非常干净，直接和可靠。
您可以使用this或/* global wc_checkout_params */
jQuery( function( $ ) {
// wc_checkout_params is required to continue, ensure the object exists
if ( typeof wc_checkout_params === 'undefined' ) {
return false;
}
console.log('Start');
$.blockUI.defaults.overlayCSS.cursor = 'default';
var wc_checkout_form = {
updateTimer: false,
dirtyInput: false,
xhr: false,
$order_review: $( '#order_review' ),
$checkout_form: $( 'form.checkout' ),
init: function() {
console.log('Init');
$( document.body ).bind( 'updated_checkout', this.updated_checkout );
$( document.body ).bind( 'update_checkout', this.update_checkout );
$( document.body ).bind( 'init_checkout', this.init_checkout );
$( document.body ).bind( 'country_to_state_changed', this.upgrade_state_fields );
$( document.body ).on( 'change', 'select.country_to_state, input.country_to_state', this.upgrade_state_fields );
$( '.back-to-checkout' ).bind( 'click', this.close_drawer );
// Payment methods
this.$checkout_form.on( 'click', 'input[name="payment_method"]', this.payment_method_selected );
if ( $( document.body ).hasClass( 'woocommerce-order-pay' ) ) {
this.$order_review.on( 'click', 'input[name="payment_method"]', this.payment_method_selected );
}
$( 'button.details-next-button' ).bind( 'click', this.prevent_checkout );
// Form submission
$( document.body ).on( 'click', '#place_order', this.submit );
this.$checkout_form.on( 'submit', this.submit );
// Inline validation
this.$checkout_form.on( 'blur change', '.input-text, select, input:checkbox', this.validate_field );
// Manual trigger
this.$checkout_form.on( 'update', this.trigger_update_checkout );
// Inputs/selects which update totals
this.$checkout_form.on( 'change', 'select.shipping_method, input[name^="shipping_method"], #ship-to-different-address input, .update_totals_on_change select, .update_totals_on_change input[type="radio"]', this.trigger_update_checkout );
this.$checkout_form.on( 'change', '.address-field select', this.input_changed );
this.$checkout_form.on( 'change', '.address-field input.input-text, .update_totals_on_change input.input-text', this.maybe_input_changed );
this.$checkout_form.on( 'change keydown', '.address-field input.input-text, .update_totals_on_change input.input-text', this.queue_update_checkout );
// Address fields
this.$checkout_form.on( 'change', '#ship-to-different-address input.mdl-switch__input', this.ship_to_different_address );
this.$checkout_form.on( 'change', '#order_notes input.mdl-switch__input', this.order_notes );
// Trigger events
this.$checkout_form.find( '#ship-to-different-address input' ).change();
this.init_payment_methods();
// Update on page load
if ( wc_checkout_params.is_checkout === '1' ) {
$( document.body ).trigger( 'init_checkout' );
}
if ( wc_checkout_params.option_guest_checkout === 'yes' ) {
$( 'input#createaccount' ).change( this.toggle_create_account ).change();
} else {
$( 'div.create-account' ).show();
}
jQuery('.woocommerce-message').remove();
},
init_payment_methods: function( selectedPaymentMethod ) {
console.log('Init payment_methods');
var $payment_methods = $( '.woocommerce-checkout' ).find( 'input[name="payment_method"]' );
// If there is one method, we can hide the radio input
if ( 1 === $payment_methods.length ) {
$payment_methods.eq(0).hide();
}
// If there was a previously selected method, check that one.
if ( selectedPaymentMethod ) {
$( '#' + selectedPaymentMethod ).prop( 'checked', true );
}
// If there are none selected, select the first.
if ( 0 === $payment_methods.filter( ':checked' ).length ) {
$payment_methods.eq(0).prop( 'checked', true );
}
// Trigger click event for selected method
$payment_methods.filter( ':checked' ).eq(0).trigger( 'click' );
wc_checkout_form.convert_payment_textinputs();
},
close_drawer: function() {
console.log('close_drawer');
jQuery('.mdl-layout__obfuscator.is-visible').click();
},
updated_checkout: function() {
console.log('updated_checkout');
jQuery('.mdl-layout__drawer .shipping input[type=radio]').each(function() {
var name = $(this).attr('name');
var id = $(this).attr('id');
$(this).attr('name','review_' + name);
$(this).attr('id','review_' + id);
});
componentHandler.upgradeDom();
window.setTimeout(function() {
jQuery('.mdl-textfield').each(function() {
if (!jQuery(this).is('.validate-required')) {
jQuery(this).removeClass('is-invalid');
}
if (jQuery(this).find('.mdl-textfield__input').val() != '') {
jQuery(this).addClass('is-dirty');
}
});
},10);
if (jQuery('.woocommerce-error').length > 0) {
var message ='';
jQuery('.woocommerce-error').find('li').each(function() {
message+= jQuery(this).text();
});
jQuery('.woocommerce-error').remove();
var snackbarContainer = document.querySelector('#error-snackbar');
var data = {
message: message,
timeout: 5000
};
snackbarContainer.MaterialSnackbar.showSnackbar(data);
}
jQuery('.woocommerce-message').remove();
},
convert_payment_textinputs: function() {
console.log('convert_payment_textinputs');
jQuery('.payment_box').find('input[type=text],input[type=tel],input[type=email],input[type=date],input[type=password]').each(function() {
if (jQuery(this).parent().is('[data-upgraded]') || jQuery(this).parent().find('input[type=text],input[type=tel],input[type=email],input[type=date],input[type=password]').length > 1) {
return;
}
jQuery(this).parent().addClass('mdl-textfield mdl-js-textfield mdl-textfield--floating-label');
jQuery(this).addClass('mdl-textfield__input');
jQuery(this).parent().find('label').addClass('mdl-textfield__label');
componentHandler.upgradeElement(jQuery(this).parent()[0]);
});
},
upgrade_state_fields: function() {
console.log('upgrade_state_fields');
$('#billing_state,#shipping_state').addClass('mdl-textfield__input');
$('#billing_state,#shipping_state,#billing_country, #shipping_country').each(function() {
jQuery(this).parent().removeAttr('data-upgraded');
jQuery(this).find('option[value=""]').text('');
componentHandler.upgradeElement(jQuery(this).parent()[0]);
});
window.setTimeout(function() {
jQuery('.mdl-textfield').each(function() { jQuery(this).find('.mdl-textfield__input').each(function() {
if (jQuery(this).val() && jQuery(this).val() != '') {
jQuery(this).parent().addClass('is-dirty');
} else {
jQuery(this).parent().removeClass('is-dirty');
}
if (jQuery(this).attr('placeholder') && jQuery(this).attr('placeholder') != '') {
jQuery(this).parent().addClass('has-placeholder');
} else {
jQuery(this).parent().removeClass('has-placeholder');
}
}); });
},100);
},
get_payment_method: function() {
console.log('get_payment_method');
return wc_checkout_form.$checkout_form.find( 'input[name="payment_method"]:checked' ).val();
},
payment_method_selected: function() {
console.log('payment_method_selected');
if ( $( '.payment_methods input.input-radio' ).length > 1 ) {
var target_payment_box = $( 'div.payment_box.' + $( this ).attr( 'ID' ) );
if ( $( this ).is( ':checked' ) && ! target_payment_box.is( ':visible' ) ) {
$( 'div.payment_box' ).filter( ':visible' ).slideUp( 250 );
if ( $( this ).is( ':checked' ) ) {
$( 'div.payment_box.' + $( this ).attr( 'ID' ) ).slideDown( 250 );
}
}
} else {
$( 'div.payment_box' ).show();
}
if ( $( this ).data( 'order_button_text' ) ) {
$( '#place_order' ).val( $( this ).data( 'order_button_text' ) );
} else {
$( '#place_order' ).val( $( '#place_order' ).data( 'value' ) );
}
},
toggle_create_account: function() {
console.log('toggle_create_account');
$( 'div.create-account' ).hide();
if ( $( this ).is( ':checked' ) ) {
$( 'div.create-account' ).slideDown();
}
},
init_checkout: function() {
console.log('init_checkout');
$( '#billing_country, #shipping_country, .country_to_state' ).change();
$( document.body ).trigger( 'update_checkout' );
},
maybe_input_changed: function( e ) {
console.log('maybe_input_changed');
if ( wc_checkout_form.dirtyInput ) {
wc_checkout_form.input_changed( e );
}
},
input_changed: function( e ) {
console.log('input_changed');
wc_checkout_form.dirtyInput = e.target;
wc_checkout_form.maybe_update_checkout();
},
queue_update_checkout: function( e ) {
console.log('queue_update_checkout');
var code = e.keyCode || e.which || 0;
if ( code === 9 ) {
return true;
}
wc_checkout_form.dirtyInput = this;
wc_checkout_form.reset_update_checkout_timer();
wc_checkout_form.updateTimer = setTimeout( wc_checkout_form.maybe_update_checkout, '1000' );
},
trigger_update_checkout: function() {
console.log('trigger_update_checkout');
wc_checkout_form.reset_update_checkout_timer();
wc_checkout_form.dirtyInput = false;
$( document.body ).trigger( 'update_checkout' );
},
maybe_update_checkout: function() {
console.log('maybe_update_checkout');
var update_totals = true;
if ( $( wc_checkout_form.dirtyInput ).length ) {
var $required_inputs = $( wc_checkout_form.dirtyInput ).closest( 'div' ).find( '.address-field.validate-required' );
if ( $required_inputs.length ) {
$required_inputs.each( function() {
if ( $( this ).find( 'input.input-text' ).val() === '' ) {
update_totals = false;
}
});
}
}
if ( update_totals ) {
wc_checkout_form.trigger_update_checkout();
}
},
ship_to_different_address: function() {
console.log('ship_to_different_address');
if ( $( this ).is( ':checked' ) ) {
$( '#shipping_address_section' ).slideDown();
} else {
$( '#shipping_address_section' ).slideUp();
}
},
order_notes: function() {
console.log('order_notes');
if ( $( this ).is( ':checked' ) ) {
$( '#order_notes_section' ).slideDown();
} else {
$( '#order_notes_section' ).slideUp();
}
},
reset_update_checkout_timer: function() {
console.log('reset_update_checkout_timer');
clearTimeout( wc_checkout_form.updateTimer );
},
validate_field: function() {
console.log('validate_field');
var $this = $( this ),
$parent = $this.closest( '.form-row' ),
validated = true;
if ( $parent.is( '.validate-required' ) ) {
if ( 'checklox' === $this.attr( 'type' ) && ! $this.is( ':checked' ) ) {
$parent.removeClass( 'woocommerce-validated' ).addClass( 'woocommerce-invalid woocommerce-invalid-required-field' );
validated = false;
} else if ( $this.val() === '' ) {
$parent.removeClass( 'woocommerce-validated' ).addClass( 'woocommerce-invalid woocommerce-invalid-required-field' );
validated = false;
}
}
if ( $parent.is( '.validate-email' ) ) {
if ( $this.val() ) {
/* https://stackoverflow.com/questions/2855865/jquery-validate-e-mail-address-regex */
var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
if ( ! pattern.test( $this.val() ) ) {
$parent.removeClass( 'woocommerce-validated' ).addClass( 'woocommerce-invalid woocommerce-invalid-email' );
validated = false;
}
}
}
if ( validated ) {
$parent.removeClass( 'woocommerce-invalid woocommerce-invalid-required-field' ).addClass( 'woocommerce-validated' );
}
},
update_checkout: function( event, args ) {
console.log('update_checkout');
// Small timeout to prevent multiple requests when several fields update at the same time
wc_checkout_form.reset_update_checkout_timer();
wc_checkout_form.updateTimer = setTimeout( wc_checkout_form.update_checkout_action, '5', args );
},
update_checkout_action: function( args ) {
console.log('update_checkout_action');
if ( wc_checkout_form.xhr ) {
wc_checkout_form.xhr.abort();
}
if ( $( 'form.checkout' ).length === 0 ) {
return;
}
args = typeof args !== 'undefined' ? args : {
update_shipping_method: true
};
var country = $( '#billing_country' ).val(),
state = $( '#billing_state' ).val(),
postcode = $( 'input#billing_postcode' ).val(),
city = $( '#billing_city' ).val(),
address = $( 'input#billing_address_1' ).val(),
address_2 = $( 'input#billing_address_2' ).val(),
s_country = country,
s_state = state,
s_postcode = postcode,
s_city = city,
s_address = address,
s_address_2 = address_2;
has_full_address = true;
if ( $( '#ship-to-different-address' ).find( 'input' ).is( ':checked' ) ) {
s_country = $( '#shipping_country' ).val();
s_state = $( '#shipping_state' ).val();
s_postcode = $( 'input#shipping_postcode' ).val();
s_city = $( '#shipping_city' ).val();
s_address = $( 'input#shipping_address_1' ).val();
s_address_2 = $( 'input#shipping_address_2' ).val();
}
var data = {
security: wc_checkout_params.update_order_review_nonce,
payment_method: wc_checkout_form.get_payment_method(),
country: country,
state: state,
postcode: postcode,
city: city,
address: address,
address_2: address_2,
s_country: s_country,
s_state: s_state,
s_postcode: s_postcode,
s_city: s_city,
s_address: s_address,
s_address_2: s_address_2,
has_full_address: has_full_address,
post_data: $( 'form.checkout' ).serialize()
};
console.log(data);
if ( false !== args.update_shipping_method ) {
var shipping_methods = {};
$( 'select.shipping_method, input[name^="shipping_method"][type="radio"]:checked, input[name^="shipping_method"][type="hidden"]' ).each( function() {
shipping_methods[ $( this ).data( 'index' ) ] = $( this ).val();
} );
data.shipping_method = shipping_methods;
}
$( '.woocommerce-checkout-payment, .woocommerce-checkout-review-order-table' ).block({
message: null,
overlayCSS: {
background: '#fff',
opacity: 0.6
}
});
wc_checkout_form.xhr = $.ajax({
type: 'POST',
url: wc_checkout_params.wc_ajax_url.toString().replace( '%%endpoint%%', 'update_order_review' ),
data: data,
success: function( data ) {
var selectedPaymentMethod = $( '.woocommerce-checkout input[name="payment_method"]:checked' ).attr( 'id' );
// Reload the page if requested
if ( 'true' === data.reload ) {
window.location.reload();
return;
}
// Remove any notices added previously
$( '.woocommerce-NoticeGroup-updateOrderReview' ).remove();
var termsCheckBoxChecked = $( '#terms' ).prop( 'checked' );
window.fragmentss = data.fragments;
// Always update the fragments
if ( data && data.fragments ) {
$.each( data.fragments, function ( key, value ) {
$( key ).replaceWith( value );
$( key ).unblock();
} );
}
// Recheck the terms and conditions box, if needed
if ( termsCheckBoxChecked ) {
$( '#terms' ).prop( 'checked', true );
}
// Check for error
if ( 'failure' === data.result ) {
var $form = $( 'form.checkout' );
// Remove notices from all sources
$( '.woocommerce-error, .woocommerce-message' ).remove();
// Add new errors returned by this event
if ( data.messages ) {
$form.prepend( '<div class="woocommerce-NoticeGroup-updateOrderReview">' + data.messages + '</div>' );
} else {
$form.prepend( data );
}
// Lose focus for all fields
$form.find( '.input-text, select, input:checkbox' ).blur();
// Scroll to top
$( 'html, body' ).animate( {
scrollTop: ( $( 'form.checkout' ).offset().top - 100 )
}, 1000 );
}
// Re-init methods
wc_checkout_form.init_payment_methods( selectedPaymentMethod );
// Fire updated_checkout e
$( document.body ).trigger( 'updated_checkout', [ data ] );
}
});
},
prevent_checkout: function(e) {
console.log('prevent_checkout');
console.log('clickprevent');
e.preventDefault();
},
submit: function(e) {
console.log('submit');
e.preventDefault();
wc_checkout_form.reset_update_checkout_timer();
var $form = $( wc_checkout_form.$checkout_form );
console.log('Form:' + $form);
if ( $form.is( '.processing' ) ) {
return false;
}
$( document )
.on(
'stripeError',
wc_checkout_form.updated_checkout
)
.on(
'checkout_error',
wc_checkout_form.updated_checkout
);
// Trigger a handler to let gateways manipulate the checkout if needed
if ( $form.triggerHandler( 'checkout_place_order' ) !== false && $form.triggerHandler( 'checkout_place_order_' + wc_checkout_form.get_payment_method() ) !== false ) {
$form.addClass( 'processing' );
var form_data = $form.data();
console.log ('Form Data:' + form_data );
if ( 1 !== form_data['blockUI.isBlocked'] ) {
$form.block({
message: null,
overlayCSS: {
background: '#fff',
opacity: 0.6
}
});
}
// ajaxSetup is global, but we use it to ensure JSON is valid once returned.
$.ajaxSetup( {
dataFilter: function( raw_response, dataType ) {
// We only want to work with JSON
if ( 'json' !== dataType ) {
return raw_response;
}
try {
// Check for valid JSON
var data = $.parseJSON( raw_response );
if ( data && 'object' === typeof data ) {
// Valid - return it so it can be parsed by Ajax handler
return raw_response;
}
} catch ( e ) {
// Attempt to fix the malformed JSON
var valid_json = raw_response.match( /{"result.*"}/ );
if ( null === valid_json ) {
console.log( 'Unable to fix malformed JSON' );
} else {
console.log( 'Fixed malformed JSON. Original:' );
console.log( raw_response );
raw_response = valid_json[0];
}
}
return raw_response;
}
} );
console.log($form.serialize());
alert($form.serialize());
$.ajax({
type: 'POST',
url: wc_checkout_params.checkout_url,
data: $form.serialize(),
dataType: 'json',
，因为它们提供相同的结果。
billing_first_name=Testname&billing_last_name=Testlastname&billing_phone=0800000000&billing_email=test%40wpmad.com&billing_country=GB&billing_address_1=4+Test+Street&billing_address_2=&billing_city=Test+City&billing_state=Worcestershire&billing_postcode=DY11+1JR&shipping_first_name=Testname&shipping_last_name=Testlastname&shipping_company=&shipping_country=GB&shipping_address_1=99+Test+Street&shipping_address_2=&shipping_city=Worcester&shipping_state=Worcestershire&shipping_postcode=WR1+2DS&order_comments=&shipping_method%5B0%5D=free_shipping%3A1&terms=on&terms-field=1&_wpnonce=34d56c864b&_wp_http_referer=%2F%3Fwc-ajax%3Dupdate_order_review
将找出匹配的标签，而不管它们的位置如何。
请注意，我的解决方案区分大小写。
代码：（Demo）
evaluate()答案 2 :(得分：0)
作为SimpleXML中完成此操作所需的各个部分的简单模型，您需要了解一些概念才能使其工作。
主要是XPath，它是一种用于XML的SQL。当然，它有它自己的符号，有时可能有点书呆子，但是您可以在https://codebeautify.org/Xpath-Tester之类的网站上进行实验。
$data = '<?xml version="1.0" encoding="UTF-8"?>
<Users>
<User id="123">
<Name>fred</Name>
<Extension>1234</Extension>
</User>
<User id="124">
<Name>bert</Name>
<Extension>1235</Extension>
</User>
<User id="125">
<Name>foo</Name>
<Extension>1236</Extension>
</User>
</Users>';
$userID = "123";
$users = simplexml_load_string($data);
// Find the user with the id attribute (use [0] as the call to xpath
// returns a list of matches and you only want the first one)
$userMatch = $users->xpath("//User[@id='{$userID}']")[0];
// Just output user id attribute and name
echo "id=".$userMatch['id'].",name=".$userMatch->Name.PHP_EOL;
echo "Removing user...".PHP_EOL;
// Remove the user - note the [0] is required here
unset($userMatch[0]);
// Print out the resulting XML after the removal
echo $users->asXML();
我已经在代码中注释了代码的工作方式。输出是...
id=123,name=fred
Removing user...
<?xml version="1.0" encoding="UTF-8"?>
<Users>
<User id="124">
<Name>bert</Name>
<Extension>1235</Extension>
</User>
<User id="125">
<Name>foo</Name>
<Extension>1236</Extension>
</User>
</Users>