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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.str-contains">
<refnamediv>
<refname>str_contains</refname>
<refpurpose>Determine if a string contains a given substring</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>str_contains</methodname>
<methodparam><type>string</type><parameter>haystack</parameter></methodparam>
<methodparam><type>string</type><parameter>needle</parameter></methodparam>
</methodsynopsis>
<para>
Performs a case-sensitive check indicating if <parameter>needle</parameter> is contained
in <parameter>haystack</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>haystack</parameter></term>
<listitem>
<para>
The string to search in.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>needle</parameter></term>
<listitem>
<para>
The substring to search for in the <parameter>haystack</parameter>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns &true; if <parameter>needle</parameter> is in
<parameter>haystack</parameter>, &false; otherwise.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Using the empty string <literal>''</literal></title>
<programlisting role="php">
<![CDATA[
<?php
if (str_contains('abc', '')) {
echo "Checking the existence of the empty string will always return true";
}
?>
]]>
</programlisting>
&example.outputs;
<screen role="php">
<![CDATA[
Checking the existence of the empty string will always return true
]]>
</screen>
</example>
<example>
<title>Showing case-sensitivity</title>
<programlisting role="php">
<![CDATA[
<?php
$string = 'The lazy fox jumped over the fence';
if (str_contains($string, 'lazy')) {
echo "The string 'lazy' was found in the string\n";
}
if (str_contains($string, 'Lazy')) {
echo 'The string "Lazy" was found in the string';
} else {
echo '"Lazy" was not found because the case does not match';
}
?>
]]>
</programlisting>
&example.outputs;
<screen role="php">
<![CDATA[
The string 'lazy' was found in the string
"Lazy" was not found because the case does not match
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
¬e.bin-safe;
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>str_ends_with</function></member>
<member><function>str_starts_with</function></member>
<member><function>stripos</function></member>
<member><function>strrpos</function></member>
<member><function>strripos</function></member>
<member><function>strstr</function></member>
<member><function>strpbrk</function></member>
<member><function>substr</function></member>
<member><function>preg_match</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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