substr_compare

Nom:substr_compare

Catégorie:Chaîne

Langage de programmation:php

Description en une ligne:Comparez deux chaînes de la position de départ spécifiée (coque binaire et sélectif sensible).

Exemple

Exemple 1

Comparez deux chaînes:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">Echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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Exemple 2

Comparez deux chaînes, lorsque la position de début pour la comparaison dans String1 est de 6:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">Echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"World"</span> <span class="token punctuation">,</span> <span class="token number">6</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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Exemple 3

Utilisez tous les paramètres:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"ou"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"ld"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">2</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"orl"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"ou"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">,</span> <span class="token constant boolean">true</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"ou"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">3</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"rl"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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Exemple 4

Différentes valeurs de retour:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">Echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hello World!"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// deux chaînes sont égales</span>
<span class="token keyword">Echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Bonjour"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// <i>String1</i> est supérieur à <i>String2</i></span>
<span class="token keyword">Echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello World!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hello World! Hello!"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// <i>String1</i> est inférieur à <i>String2</i></span>
<span class="token delimiter important">?></span></span>

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