php-doc-en/reference/strings/functions/strcspn.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.strcspn">
 <refnamediv>
  <refname>strcspn</refname>
  <refpurpose>Find length of initial segment not matching mask</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>int</type><methodname>strcspn</methodname>
   <methodparam><type>string</type><parameter>str1</parameter></methodparam>
   <methodparam><type>string</type><parameter>str2</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>start</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>length</parameter></methodparam>
  </methodsynopsis>
  <para>
   Returns the length of the initial segment of
   <parameter>str1</parameter> which does <emphasis>not</emphasis>
   contain any of the characters in <parameter>str2</parameter>.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>str1</parameter></term>
     <listitem>
      <para>
       The first string.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>str2</parameter></term>
     <listitem>
      <para>
       The second string.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>start</parameter></term>
     <listitem>
      <para>
       The start position of the string to examine.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>length</parameter></term>
     <listitem>
      <para>
       The length of the string to examine.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns the length of the segment as an integer.
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>4.3.0</entry>
       <entry>
        The <parameter>start</parameter> and <parameter>length</parameter>
        were added
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example xml:id="strcspn.example">
   <title><function>strcspn</function> example</title>
   <programlisting role="php">
<![CDATA[
<?php
$a = strcspn('abcd',  'apple');
$b = strcspn('abcd',  'banana');
$c = strcspn('hello', 'l');
$d = strcspn('hello', 'world');

var_dump($a);
var_dump($b);
var_dump($c);
var_dump($d);
?>
]]>
   </programlisting>
   &example.outputs;
   <screen>
<![CDATA[
int(0)
int(0)
int(2)
int(2)
]]>
   </screen>
  </example>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  &note.bin-safe;
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>strspn</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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