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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.9 $ -->
<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="notes">
&reftitle.notes;
¬e.bin-safe;
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>strspn</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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